Automatically-acting coating device in the manufacture of reenforced fabric bands



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L. AQSUBERS AUTOMATIQALLY ACTING GOATING DEVICE IN THE NIANUFACTURE OF REENFORCED FABRIC BANDS Original Filed Sept. 4, 5 sheets-sheet 1 1mb'. zu, w23.,

SUBERS LA. AUTOMATICALLY ACTING COATING DEVICE IN THE MANUFACTURE OF REENFORCED. FABRIC BANDS Original Filed Sept.

4, 1919 5 sheets-Sheet 2 IN V EN TOR.

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` L. SUIBERS l AUTOMATICALLY ACTING GOATING DEVICE IN THE MANUFACTURE OF REENFORCED FABRIC BANDS Original Filed Sept. 4, 1919 5 sheets-sheet 3 A TTO EY.

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AUTGIEWATIQALLYCTING COATING JDIEVJICE 1[NTH]E MNUIFMCTURJE 01E' REENFORGED I lIlfltBJEtlIt'J BANDS.

Application led September 4t, 1919 aerial No. 321,591. Renewed July 13, 1922. Serial No. 574,@22.

To Uw/mm if muy conce-rn.' y

Beit known that ll. LAWRENCE Somers, a citizen of the lnited States, residing' at lailw\\'o il. in the county of Cuyahoga and State of Ohio. have invented new and usef ful Improvements in Ailutomatically-ltcting (`oating Devices in the Manu facture of litecnforced Fabric Bands, of which the following is a` specific-ation. f

The invention has reference to an improvement in an` autoimitically acting coating device for use in the manufacture of a reenforced fabric bandl which is formedof a series of yarn elements interwound upon amandrel to produce layers or laminations thereon, which are afterwards flattened into the form of a band.

rl`he particular objects of this invention are to provide means for directly producing a flattened band upon a flattened mandrel, for coating the same with liquid rubber, or other adhesive material. and for enclosing the flattened hand in strips of non-adhesive material such as Holland cloth so as to form a temporary protection therefor, and to retain the rubber upon the coated band until it has passed through the pulling devices and `vacuum and heat chamber where the solvents are'sufficiently evaporated from the coating material toleave it in the desired solidifie form.

The device by ,which the fabric band is pulled along the mandrel delivers it off the end of theV mandrel without any tension thereon although its passage is resisted by the ,friction of the yarn elements interWound and laminated thereon under tension and by their resistance in passing over t-he expanded portion of the mandrel. The delivery of the fabric band to the vacuum and heat chamber Withouttension allowsy it to be flattened and compressed "therein wit-hout practically any loss of width o r increased thickness.

The invention also includes the insertion within the flattened fabric band of a thin band or core of reinforcing material such asl While enclosed in a bath of liquid rubber or other adhesive material ofa predetermined consistency vand under a Lpredetermined amount of pressure so as yto secure a complete coatingof the yarn elements. and also to so' temporarily displace the varn ele ments as to uncover 'the normal crossing points thereof and to allow them to become coated with liquid rubber.

rll'he invention further comprises the com b-ination and arrangement of parts and construction of details hereinafter described, shown in the accompanying drawings and specifically pointed out in the claims.

This application is substituted for my prior application No. 704,410 filed June 18th, 1912, for an automatic device for coating fibrous elements from which a reenforced laminated cohesive interwound band is constructed.

In the accompanying drawings:

Figure 1 is a vertical longitudinal section of the device. showing the reels and vspools for winding the fabric, the hollow mandrel, the. coating device, the pulling device, the vacuum chamber. and means for feeding the metallic. reinforcing band into the hollow mandrel.

Figure 2 is a plan View of the mandrel.

Figure 3 is a transverse section thereof on line a--a of Figure 2.

Figure 3 is a. transverse section on line f-f of Figure 2.

.Figure 4 is a longitudinal vertical section4 of the mandrel.

Figure 5 is a horizontal section of the mandrel on the central line showing ,the

fabric expanding portion.

.Figure 6 is a transverse section thereof enlarged from a section on line b-b of Figure 2.

Figure 7 is a face View of one of the gates which automatically close the opening in the vacuum chamber ythrough which the fabric passes.

Figure 8 is a vertical section thereof. Figure 9 is an enlarged plan view of the rubber chamber, the mandrel with the fabric thereon, the means for applying Holland cloth thereto, and the pulling device.

Figure 10 is a side elevation thereof.

Figure 1l is an enlarged plan view of the overlapping guides for-the llolland cloth.

Figure 12 is a vertical section through the pulling device for the fabric on line c-c of Figure 10. i

lFigure 13 is a )erspective view of one of the serrated fabric engaging shoes mounted upon endless chains .which form the pulling means for the fabric.

Figure 14 illustrates` one of the chain blocks which carry the serrated shoes.

Figure l5 is a transverse section of one of said serrated shoes.

Figure lt is a transverse section'on line r---fl of Figure Sl, showing the guides for the llolland cloth. n

Figure 17 is a transverse section ot the same on line c---c of Figure l), showing the inwardly turned edges of the giiides.

Figure. 1H is a horizontal section through the hollow standard B through which the liquid rubber and metallic reinforcing ribbon or band pass to the interior of the hollow mandrel.

Figure 1S) is a longitudinal section of the rubber applying chamber.

Figure 2() is a transverse section of the rubber applying chamber 0n line Q -g of Figure, 19, showing the gate for closing one of the openings through which the band passes.

Figure 21 is a perspective view of one of the gates and the end wall of the rubber applying chamber.

Figure 22 is a face view of the plug and gate for closing the entrance to the hollow standard to which the mandrel is indirectly attached by means of an extension tube.

Figure 23 is a longitudinal section thereof.

In these drawings the arrangement of the several reels and mandrel is substantially the same as shown and described in my previous Patents Nos. 1,189,751; 1,233,636;

This portion of the device is illustrated in Figure 1. Here B, B, B2 and B3 form a series of reel carriers of which the alternate reel carriers rotate in opposite directions about the mandrel J which is secured at one end in a rigid tube Y secured to and in continuation of the tube B8 in the bracket upon the main frame BL".

Spools C, C are spaced about the reel carriers and upon these spools are stored the yarn elements F, F of which the fabric band is constructed and are guided to the mandrel'by means of guiding and tension rollers g2?, 01;. C3 :1nd, R20 and spaced guide frames 7 The mandrel J is provided with an extended flattened blade J upon which the yarn elements F are interwound and laminated to construct a flattened tubular fabric and the. fabric immediately passed through a chamber ll lllcd with luid rubbei' under a predetermined amount of pressure and a certain consistency of composition, determined by the thickness of the coating required.

To insure, a complete coating of the individual yarns in the yarn elements and also to'changc. temporarily the crossing points of the yarn elements in the fabric while passing through the rubber chamber, the mandrel is widened at the center of the rubbed chamber at J2 and as the yarn elements I", l*` pass over the widened portion they are temporarily spaced apart from cach other and at a greater angle to the axis of the mandrel` thereby changing their points of crossing. 'lhe individual yarns in the yarn elements are also temporarily slightly separated from each other so that the rubber will have access to and coat the entire exposed surface of each yarn.

The extended edges of the mandrel are also longitudinally slotted at J3. J to admit rubber to the interior surface of the fabric. band.

The rubber chamber 1 has each end made in halves 1b and 1 (see Figure 21) for ease in assembling and an opening 1"` through which the mandrel and fabric pass, is protected by gates 1e and 1f` gate 1e secured by screw 1'Z and gate 1r sliding under gibs 1", 1` and pressed by a spring 1l. secured to pins l, 1", thus permitting only a predetermined amount of liquid rubber to pass through on the fabric band. Fach end of the rubber chamber is constructed in the same manner.

A pipe 1l furnishes fluid rubber under pressure to the chamber l and a dial 1m indicates the amount of pressure therein.

A thin band of metal or other desired material 2 is fed through a central opening J in the mandrel which is large enough to permit of a coating of rubber to envelop the said band and when the fabric is pulled off from the mandrel this band travels therewith and becomes a reinforcing core adliering thereto.

In Figures 1. 18. 22 and 23 means are shown for feeding the reinforcing band to the mandrel. Here 2" is a spool upon which this band is wound` 2c is a guide roller therefor arranged to lead the band into the rear extremity of the mandrel. 2d is a pipe T secured to the pipe 2c which in turn is threaded into the hollow standard BR whici supports the tube Y to which the mandrel J is secured. Rubber is fed therein at the desired pressure through pipe D,

The metal band 2 passes through an opening 2r in a plug 2 which forms a closure for the outer end of the pipe T. 2, and adjustable gates 2h and 2I prevent the rubber from escaping. Grate 2h is stationary and gate 2J is free to slide under the head of the screw 2k, being pressed by a yspring 21.

The fabric flattened by passing over the flattened mandrel is pulled along `the man-v drel by means of endless chains formed byk links R pivoted to blocks R12 upon which are mounted shoes R4 having serrated edges, or any other desired form of gripping surface, Which engage and pull the fabric along the mandrel, delivering it off the end of the mandrel free and Without tension.

These chains are mounted on sprocket Wheels R2 and R3 upon diametrical'ly opposite sides of the mandrel and the shoes are kept in engagement with the fabric by means of adjustable bearing plates R13, R1S mounted upon a bracket R14 upon which also the rubber chamber is supported.

The chains are operated by power applied to shaft V12, gear V9 and intermeshing gears R8, R8 mounted on the sprocket Wheels shafts R and R7.

rllhe mandrel J extends the full length of the pulling chain, and that portion of the mandrel is recessed top and bottom at J5 and l so that there is a space between the encompassing fabric band and the recessed parts thereof. The serrated pulling shoes R4 are thus enabled to engage the fabric band Without their points R5 engaging the mandrel and the band lis thus pulled along with practically no displacement ofthe yarn elements. due to their tension on the' mandrel. rlFhe fabric band as it leaves the end of the mandrel closes around the flat reinforcing ribbon 2a and they pass together as a unit into the vacuum and heat chamber G and over a series of fluted pulling and drying rolls H2, H2 Where the solvents in tfhe liquid rubber or' other adhesive material are evaporated'to a predetermined degree, and the tension on the fabric band tends to flatten and close it tightly-around the reinforc-l ing element QF. An opening F18 in the Walls of this vacuum chamber G admits the fabric band, the. air being substantially excluded by adjustable gates'consisting of a stationary male'jaw Hand a slidingfemale jaw H16 operated by a spring H17 land mounted on a plate H18 attached to the chamber Gr. v

The toothedl wheels H2, H2 4serve also as av pulling means for the fabric band and its core and compress the'fabrio uponthe core. 'llo prevent the loss of exterior coating or of any part thereof from pressure bythe' squeezing out of the rubber from the coated yarns and yarn elements, bands 3 of a nonadhesive substance such `as Holland cloth are caused to envelop the band and travel therewith as it Apasses through the chain pulling device. i

rlhese bands are stored upon vspools' 3b and pass through sheet metal guides 3c, 3d secured upon each side of the mandrel as shown in Figures 9, 10, 11` 16 and 17.

The guides are first turned over at 3e at their edges to retain the Holland cloth. One

of the guides next overlaps the other as shown in Figure 16 and finally the outer guide extends beyond the other at 3f and is shaped to overlap the edges of the Holland cloth strips or bring them closely together as shown in Figure 11.`

lBy the term yarn elements as used in these specifications and claims is meant a group of close lying parallel yarns or threads of a predetermined number and diameter forming a flat band.

` lit isv obvious that the fabric band may be made Without a reinforcing element embodied therein, without departing from the spirit of the invention or the scope of the claims.v y

llt is "also'obvious that the pulling chain mechanism of any desired length may be used in thev vacuum and heat chamber to take up and carry along the fabric with or Without the reinforcing element until the solvents may be sufficiently evaporated therefrom to leave it in the desired solidified state, Without departing from the spirit of 'the invention or the scope ofthe claims.

mandrel having longitudinal recesses on opposite sides. of oppositely placed pulling devices` including engaging members for the fabric, said members engaging said fabric whe-re said fabric passes over said longitudinal recesses in said mandrel. Y

3. rlhe combination with a mandrel for winding a flattened tubular fabric. said mandrel having a flat body portion and outer extremity, and provided 'withjoppof sitely placed lateral extensions intermediate of its ends. said lateral extensions being provided with longitudinal slots and longitudi-l nally tapering toward both extremities, of

a coating chamber surrounding said lateral extensions.

maritimen liguioituai spaans. 

